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Officers will have to convince a magistrate that the buildings are being used for criminal activity before permission to remove the walls is granted.

Once an order is granted, the organisation will then have three months to comply.

Attorney-General Robert Clark said the cost of removing the fortification would be billed to the owner or occupier of the premises.

Mr Ashton said he hoped police would be able to use the laws within a couple of weeks if they are passed by parliament.

The government last year introduced laws to empower police to pre-emptively strike against criminal bikie gangs.

Under those laws, a court can make a control order banning members of that group from associating or participating in gang activities, including riding together and wearing their club colours and emblems.

Laws cracking down on criminal bikie groups in South Australia and NSW were struck down by the High Court after successful challenges by bikie gangs.

Mr Clark said he was confident both the control order and anti-fortification legislation would withstand legal challenge.

"We are very confident that these laws and our criminal organisation control act will not be subject to any successful challenge," he said.

There will be penalties of up to two years' jail for obstructing the removal of fortifications that have been ordered by the courts.